fuse AUDI A6 1998 C5 / 2.G AEB Engine Motronic MFI And Ignition System
Page 118 of 135
24-86
       If the wiring is OK, but the LED test light does not 
light up:  
     
-  Replace Engine Control Module (ECM)   Page 
01
-57
 . 
      If the wiring is OK, and the signal to the fuel 
pump relay is OK:  
     
-  Replace fuel pump relay -J17-.
     
- Reinstall fuses. 
Pa
ge 118 of 135 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1 
Page 119 of 135
24-87
      
Fuel injector actuation, checking
 
      Triggering fuel injectors via output Diagnostic 
Test Mode (DTM)   Page 01
-42
   
     
Required special tools and test equipment  
     
VAG 1598/22 test box 
     Multimeter US 1119 (Fluke 83 or equivalent) 
     VAG 1527B LED voltage tester 
     VW 1594 connector test kit 
     Wiring diagram 
     
Test requirements  
     Fuse for fuel injectors OK 
     Engine speed (RPM) sensor OK 
     Fuel pump relay OK 
Pa
ge 119 of 135 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.24.1